I need to design a sign for my school that will have the letters filled with LEDs. Every letter will be independent in managing and will have all LEDs in it in parallel (or serial if its a better solution).
Can someone suggests how can I turn on/off the letter ? Preferably with no relays, 'cos I plan to program the whole thing using multiplexing and produce different styles of blinking of the letters.
I'm thinking about some powerful NPN transistor (2N6290) that I will control with a microcontroller or with the output of a decoder.
The sign will have about 18 letters, and will be 2m by 50cm. I'm still designing the letters with the LEDs but there will be probably around 50/60 (maybe less) LEDs per letter.
Thanks in advance.
Can someone suggests how can I turn on/off the letter ? Preferably with no relays, 'cos I plan to program the whole thing using multiplexing and produce different styles of blinking of the letters.
I'm thinking about some powerful NPN transistor (2N6290) that I will control with a microcontroller or with the output of a decoder.
The sign will have about 18 letters, and will be 2m by 50cm. I'm still designing the letters with the LEDs but there will be probably around 50/60 (maybe less) LEDs per letter.
Thanks in advance.